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Members of the World Beat drumming group trace how traditional African music traveled the United States and influenced jazz and rock and roll music
So here's how it works:
> Turning the aperture ring raises the "Diaphragm Bar" behind the lens. At f/2.8 it's completely below the lens opening, and at f/22 it's just below the lens centerline.
> When the mirror rises, it drags this panel up with it; the odd shaped hole in the middle is the shutter opening. The mirror/shutter rises just as fast as its spring can whack it, and returns at the same speed as soon as it reaches the top.
> At f/2.8, the shutter is open for the entire distance of travel shown in green above - it takes about 1/60 second to cover this distance. But at f/22, with the DIaphragm Bar up where the purple line indicates, the shutter doesn't open until it reaches that line, and it closes as soon as it passes that line on the way down. The entire movement takes the same time as before, but the open time is only the time that it takes to travel the distance shown by the purple arrows. Assuming that the speed at f/2.8 was 1/60, this works out to about 1/500 second.
> The aperture at f/22 (and at all other settings except for f/2.8) is in the shape of a triangle with its point at the top - the top 2 sides are the edges of the "roof" part of the shutter opening, and the bottom side is provided by the Diaphragm bar.
It's actually just a little more complicated than this. In the above description, the f/22 opening is not centered on the same axis as the f/2.8 opening, and in fact if the Diaphragm Bar actually went as high as the purple line it would block off the center of the lens. So, in addition to all of the above, at the smaller apertures, the mirror/shutter is actually stopping its upward travel earlier than it does at full aperture. How does it do this? In the view of the Diaphragm Bar at www.flickr.com/photos/rick_oleson/53225547915/in/dateposted/, there is a second, gold colored bar that's coupled to the Diaphragm Bar, with a bent-up tab at its tip. As the Diaphragm Bar rises, this gold bar comes down - the tab at the end is the stop that the mirror strikes against to stop its upward travel. The two bars are coupled together so that the mirror's stopping position produces a centered triangular aperture opening at all settings. Dang.
Whoever did this will probably never be famous - but he was good.
The Recreation program office is located in the Annex Building, located at the end of Loop Road below the Undergraduate Building. Here, you can sign up for fun trips and workshops and rent equipment for an outdoor adventure.
Photo: Laura Dutelle
The United States Air Force Band String Quartet held a special concert on May 8, 2016 for His Majesty King Norodom Sihamoni, Her Majesty Queen Mother Norodom Monineath Sihanouk, and other invited guests to commemorate a performance that took place on May 9, 1956 in Phnom Penh at the invitation of the late King Norodom Suramarit and Queen Sisowath Monivong Kossomak Nearireath Serei Watana.
Joined by two Cambodian artists, The United States Air Force Band String Quartet played a mix of American, European, and Cambodian music, including two pieces by King Sihanouk that premiered in 1956.
The musicians concluded the 60th Anniversary Concert with a special birthday message for HM King Norodom Sihamoni and a heart-warming encore performance of "Monika" in honor of HM Queen Mother Norodom Monineath Sihanouk.
[U.S. Embassy photo by Un Yarat]
Commander Ray Leung's change of command, taking over as commanding officer of The World Famous SCREWTOPS from exiting Commander Mark Seip.
(I asked, and the "World Famous" designation was given many years ago and few others have the title. Pretty cool.)
Bóthar go dtí an Whitehouse
Dé Domhnaigh 21.30
Sraith ina rianaítear stair eachtrúil agus ról lárnach na nÉireannach i bpolaitíocht na Stát Aontaithe le céad go leith bliain anuas. Is é Richard 'Boss' Croker is ábhar don eagrán , fear a d’imir tionchar mór ar an saol i Nua Eabhrac tar éis an Ghorta Mhóir. B’as an gCarraig Dhubh i gCorcaigh ó dhúchas dó ach is ar chathair Nua Eabhrac a d’fhág sé a mharc mar gurbh é a fuair ceannas ar Tamanny Hall, eagras cumhachtach polaitiúil na cathrach.
Blog Post : the-sky-calls.dreamwidth.org/119169.html
Craft File : kerbalx.com/CaptKordite/Ezeticolev-A108
KSP 1.11.2 + Kronal Vessel Viewer
Leon and I entered the Internal Functional Programming Competition this year, he also wrote some visualisation software so we could see our bot in action.
Blue = cops, Red = robber, Green = our "infocloud" - Click on all sizes to see it animated.
#TurismoPaulista O Programa de Governança e Gestão de Projetos Turísticos, uma parceria entre a APRECESP- Turismo Paulista e o Senac SP, teve inicio nesta semana. O curso está sendo realizado em quatro polos do Senac, em Ribeirão Preto, São Paulo (Aclimação) , Jundiaí e Taubaté.
O tema do primeiro módulo foi “Governança no Turismo”, o curso ainda conta com os seguintes temas “Elaboração de Projetos Prioritários no Turismo”, “Gestão de Projetos do Turismo” e “Entrega e Sistematização de Registro Final”.
No total, serão 104 horas de curso, 56 horas de carga horária presencial e outras 48 horas de aulas virtuais.
As fotos a seguir são do módulo “Governança do Turismo”, realizado no dia 28/05, no Senac Aclimação, com a presença de representantes das seguintes estâncias: Cananéia, Eldorado, Guarujá, Iguape, Ilha Comprida, Itanhaém, Mongaguá, Ribeirão Pires, Poá e São Roque.
Think of the impression you could make with this simple, modern, graphic program! Your initials or another customized "logo" is laser cut.
VS Aero Front Spoiler
VS Aero Rear Boot
Wheels:
20" VFE-404 Front
21" VFE-404 Rear
Finish
Brushed Dark Shadow Tint - gloss
Student volunteers from Thomas Nelson Community College biology classes spend their Saturday morning participating in International Coastal Cleanup day at Dandy Haven Marine in Hampton, VA on Oct 19, 2019.
Virginia Institute of Marine Science's Marine Advisory Program and Virginia Sea Grant are proud partners in the Virginia Clean Marina Program, which recognizes marinas that voluntarily take measures to prevent or reduce pollution at their facilities.
(Photo by Aileen Devlin | Virginia Sea Grant)